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: NACE
: NACE -- karthi0287	Post Reply	Top of thread	Engineering Forum

Posted by: Kelly Bramble ® 11/26/2009, 08:22:30 Author Profile eMail author Edit

Welcome to Engineers Edge! The best answer is that you should get both specifications and review. If your working to these standards you should have access at a minimum. In accordance with NACE standard MR 0175-2003 sour gas service means the presence of H2S in the following conditions: Part 1.4.1.1.: All gas, gas condensate, and sour crude oil - When the partial pressure of H2S in a wet (water as a liquid) gas phase of a gas, gas condensate, or crude oil system is equal to or exceeds 0,003 barg (0,05 psia) Exceptions are: Part 1.4.2.1.: Low-pressure gas: When the total pressure is lower than 4,5 bara (65psia) Part 1.4.2.2.: Low-pressure oil and gas multiphase systems: . Other Sour gas standards: NACE MR 0103-2003: Materials resistance to sulfide stress cracking in corrosive petroleum refining environments. Other considerations: DIN EN ISO 15156-1: Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 1: General principles for selection of cracking-resistant materials (ISO 15156-1:2001 You need to verify... Have a great thanksgiving (USA thing).

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: : NACE
: : NACE -- Kelly Bramble	Post Reply	Top of thread	Engineering Forum

Posted by: karthi0287 ® 11/26/2009, 23:47:51 Author Profile eMail author Edit

Thank for ur information And also i want to know where we use these standards, in upstream or in downstream? and why?

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